AP BIOLOGY

Detailed explanation-1: -Forests are important as they are home to the most diverse biotic communties in the world. Hidden within these biomes are potential medicines and many thousands of unseen and undiscovered species.

Detailed explanation-2: -The biodiversity of tundra is low: 1, 700 species of vascular plants and only 48 species of land mammals can be found, although millions of birds migrate there each year for the marshes. There are also a few fish species. There are few species with large populations.

Detailed explanation-3: -Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.

Detailed explanation-4: -Tundra is the coldest of all the biomes. Tundra comes from the Finnish word tunturi, meaning treeless plain. It is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons.

Detailed explanation-5: -The tundra does not have much biodiversity and vegetation is simple, including shrubs, grasses, mosses, and lichens. This is partly due to a frozen layer under the soil surface, called permafrost.